Pump mechanism



Oct. 23, 1945 v q RQTTER 2,387,684

PUMP MECHANISM Filed July 11, 1942 2 Sheets-Sheet 1 23, 194 5. c ROTTER 2,387,684

PUMP MECHANISM Filed July 11, 1942 2 Sheets-Sheet 2 QUN Df STAT;

Patented Oct. 23, 1945 Es PATENT OFFICE PUMP MECHANISM I ,,Lutwin C. Rotter, Maplewood, Mo., assignor to LincolnEngineering Company, St. Louis,Mo.,

a corporationof Missouri Application July 11, 1942, Serial No. 450,539

.on; any of various machine. frames, without interference to operation; the provision of a mechanism of the class described which will allow of positioning its operating handle upward, downward or sidewise, thus allowing said handle to be reached under all circumstances; and the provision of a deviceof the class described in which the handle and reciprocating elements of the pump may beexchanged in position with the cylinderand outlet elements of the pump,thereby enhancing the'universality. of application. Other objects will. be in part obvious and in part pointed out hereinafter.

The invention accordingly comprises the elements. and combinations of elements, features of construction, and arrangements of parts which will be, exemplified in the structures hereinafter describedhand the scope. of the application of which will be indicated in the following claims.

.In. the accompanying drawings, in which is illustrated one of various possible embodiments of the invention, H

Fig. 1 is a vertical longitudinal section, parts being shownin elevation;

2 is a right end, elevation of Fig. l, the dotted lines showing one alternate position of reciprocating pump p rts;

l 5 Fig. 3 isa vertical sectiontaken on line 33 section which areciprocatinghandpumping unit is used for withdrawing lubricant from a local supply 1 and forcingit into an injector line. Associated with this pumping unit is a relief valve which,

after, a .certain pressure; is reached above that ,required for injection, relieves the line pressure similar to certain I 4Claims. (01.184-28) This invention :relates. to pump.

and returns some lubricant to the supply. The injectors are ordinarily located at various bearingpoints on a machine, such. as on a punch press, rolling mill or the like, and it isdesirable that the pumping unit itself, including the local lubricant supply and relief valve, be attachedin some convenient position on the machine being served. Since the machines to which the pumping unit is to be attached vary in form and location. the design of a suitable given pumpingunit to adapt itself to all situations presents a problem. vThe present invention provides for the desired adaptation without the requirement of carrying various pumps for the purpose.

Referring now more particularly to Fig. 1, there is shown at numeral I a substantially symmetrical base orbody casting forming a fluid enclosure. This bodycarries a flat vertical side pad 3 having openings 5 forboltingon or near the machine to be served. This body I has a suction compartment l.- In the upper inlet of this compartment 1 is a strainer9. Bolted on the upper face of body is a lubricant container The container 1 I has a cover I3through which 1. slides a rod [5 carrying a follower plate at from the container ll.

its lower end and ahandle l9 at its upper end. The follower I5, l1, I9 is for the purpose of applying hand pressure to the lubricant when desired, and for preventing cavitation under atmospheric pressure as lubricant is Withdrawn It also acts as an indicator. V r

In order to provide for filling the device, the body I isprovidedwith an inlet fitting 2| to which an attachment may be made of a lubricant gun OPIlOZZlB. This fitting 2| connects with container H by means of a passageway through the body I and holding flanges. The passageway 23 bypasses the screen 9 so that infilling of the container ll may be made above the screen from fitting 2| without passing through that screen. On the other hand, material which flows-from the container ll to the suction chamber 1 does pass through the screen. The fitting 2| may be one of various types, but an exemplaryone is shown in United States Patent- 2,265,655, dated December 9, 1941, although that-structure is not to be, taken as limiting the .typeof fitting that may be used. u i

The body is longitudinally bored on a common center line to provide opposite equal sized openings 25 and 21, ad acent the ends of which are similar pads 29 and 3|, respectively. The openings 25 and 2|.are threaded coaxially, as

manually openable release Valve is indicatedat Within the outlet nipple 4| is an outlet-check valve 49 normally pressed closed by a spring 5|.

This valve is pressed to an open positioniby ac tion of a plunger 53 operating in the cylinder 35. The plunger 53 reciprocates and crosses the inlet port 31. This plunger 53 is-held by means ci ia:

flanged cap 55 to a plunger rod 51. The r0415] 'passes through a guide 59 which is threaded" into the opening 2! ('Fig. .1). Arspringfifl biases from the'sho'ulderedmortion:oiithe cap 55 a'gainst k a packing T 6 in the hollow'portion of the guide =59;- holdinglatter: in place, andinormally maintaining-the handie: 82in an out-.oi-thwway position after having been manually so placed. -..'I h-at is,'it prevents thehandle from viall'mgsback.

' Hie spring is not strong enough alone. .to .efiect a I pumping stroke The guidei'59 is -providedwith a headeduportion 63 a' s indicated, which: holdsinrplace Ian eyeiring 65 of a cross slot inember 81. "in i it eightequally spaced recesses 69', any one The iring 65.has

of which cooperates with-eitherof a pai-r of pins -l| respectively 'on the:pads'"29 and 3|. Thus-the 'crossnsiot -member 61 may be: plaoedli'n-to any: of

" eight 'difierentangular positions on either end of the -d'eViCeL suggested bythe two positions (solid and dotted.)

The reciprocating parts are held-in anyoneof the eight possiblerotary 'positions by one -of--the' pin-s ll an d'tightened by Different angular positions are guide 59. The head of the guideis iormed with a wrench engaging portion to effect tightening A Reciprecationof the -m m'ber 57 is accompl ishedfihy iorming' 'thecross" slot member iil' with "spaced *hookashaped arms 1-2 between whicha toggle mem-ber- "13 is guided; Guide slotsil3 are "provided for" movement A of anti-friction rollers: 15? The latter areearried on agudgeonpin 1E! the latter being afli xed to the toggle linle 18.

The toggle link 19 is pinned at 8| to the flatrear end or the reciprocating member "51. A handle 82 afl'ixed in the toggle link" TQ-SBTVBS-$0I6G6WG1 -m'anualoscillation.

- Oso'i-llationof the h-andle' 82 in any-of-the' eight planes-inwhich it may be operated results Y in movement of the rollers 15 in the guides 1-3. This causes i'eciprooation of the member 51; and "consequently reciprocationof' the plunger :53 -ac-r'oss port 31- Forward movement of the plunger 53- driveslubricantout=- past the check valve 49 and to the -in'je'c'tor pipe 1 45; functions as-a toggle link.

The. member 19 It will 'be understood that the crossslotmemberifl -may be placed in any of eight difierent J 35 ("with associated outlet parts) and the '-guide 5 9 twith associatedmeciprocating parts) may be in- --terchanged end for-end on the body In this Fig. 4 the pumping mechanism is also=shown =inits extreme rearward position,- with theplunger 53 withdrawn=across the inlet-port 31. The valve 49 4s also s'hown -shut. i

angular positions on the pads 29, just as it was adapted to be placed in any of eight different angular positions on the pad 3|. It will of course be understood that other than eight angular positions may be employed.

As stated in said Patents 2,122,177 and 2,155,- 250, a relief valve is desired between the line andthe supply. An improved form orrelief valve is shown'inEig; 3 of United StatesiPatent 2,162,-

not be again detailed herein, but an outside view of the same is shown at numeral 83. Its hexagonalbody portion, by means of a cradle 85 and bolts 81,.isheld to the bottom of the body A connection 'BBlGadSTIOm the enclosure 43 to the inletoftheielief Valve 83. The outlet of the reliefvalve is shown at 9| and leads through'an opening 'flii-iinlthebody the same being packed as indicated at 95. Thus, after operation of the injectors associated with the line 45, and after the pressure alias-risen to a predetermined'. value;re-

"lief valve ifl3.-relieves;'pressurerby:returning ilubrir tion' in the-"degree oii resistance cant backfto;thesuctionx'chamberfl. when relief operation ;occurs, it can beldetected by the-reducof operation :of

handle 82". a

.Eromvthe.ahoveritswiilzberseenithatitne bodyi I may. be considereii to be arr-enclosure for. lubricant with provision. foriinterchangeabilityibetween the reciprocating? parts. and ;:the: outlet; parts;--;along withlmeanszior permittmgathereciprocatinglparts to be operated 1 in: any of. various i predetermined planes passing throu-gh-thesaxis of 'reciprocatio cfi therpump, i j

In Fig. 6', like numerals designate like parts. The figureillustratesanlaiternative formoi handie in :whichit istmadeislidable through the-"toggle 1mg: :19; the: latter "being providedwith a -rigid rearward extension as indicated-$ 912 This'extension el has an openin'g fl through'it for slid- I ingly receivi'ng the alternate torm ofhand-le 401 The latter. has knobsa M3" to limit the 'slidingi-mo- :tion. 7 The dotted position shown in Figsfi indic ates the upper limit-ofimotion, By means 'of this alternative liandlea the oscillatingemma may-be performed by .ahand eitheraboveorbelow the 'toggie; ln addi-tiomiby plaeingthis handle at-any intermediate desired position, any desiied* l'everage may be obtained-within limits; or, a twohanded action may conyenientlyibeempleyed with one *hand on each-"knob N33 {This type of-handle is also useful in adjusting the'angular pos-ition at I the cross slot member 811' In: view of the a oovefiit will i be seen the several objects of the invention are achieved and other advantageous resultsattained:-

As manychanges 1 could be: made imthe'nhove constructions-without departiitg -fromtlie scope of the invention, it is=intended that ail-matter eonta-ined in the abeve. description or shown iin the accompanying 1 drawings shall be interpreted as i ll-ustrativeandnot inalimiting'senser I I claim:

' 1 In a pump-m arrism, 1a. be'dy forming an I enclosure for fluid; said body-having opposite- 1 located openings, means associated witltone of the openings =eomprising aqpump ylilld'r extending into' theene'losure and 'a' cheol-valveer ganized with said cylinder; ea reciprocating plunger means cooperating' eoaxiail y' with said cylinder within the -enclosure--and reachin through the other opening; a plunger" guide m --said plunger means as'sociated lwith the other opening, means 1 row reciprocating 1 the 'pieeger, interchangeable means for attaching -ateither opening either the cylinder on the one hand or on the other hand the guide, and a linkage for operating the plunger means comprising a cross slot member adapted to be held adjacent either opening by the plunger guide when the latter is fastened to the body at either opening, and

including a handle having a part forming an operating link between the cross slot member and the reciprocating means.

2. In a pump mechanism, a body forming an enclosure for fluid, said body having oppositely located threaded openings, means adapted to be threaded into either one of the openings comprising a pump cylinder, a check valve organized with said cylinder, a receiprocating plunger means cooperating coaxially with said cylinder and reaching through the other opening, a guide for said plunger means threaded into the opening unused by said pump cylinder, the threads of both openings being the same for attaching either the cylinder or the guide at either opening, a linkage for reciprocating the plunger means comprising a stationary but adjustable member adapted to be held adjacent either opening by the guide when the latter is fastened to the body at the respective opening, and including a handle having a part forming an operating connection between the adjustable member and the reciprocating means, and cooperating means between the body and said adjustable member whereby the latter may assume any one of various fixed angular positions adjacent either opening.

3. A pump mechanism comprising a body, a shouldered guide threaded into said body, a reciprocating plunger means in said guide, a cross slot member having a portion rotary on the guide and adapted to be held in any of various angular positions by threading the guide into final position on the body portion, said cross slot member having spaced extension members, each having a lateral guide slot, a handle member having a portion located for guided angling between said spaced members and having gudgeon means in said slots and bein coupled to said reciprocating plunger means, and a removable cylinder threaded to said body opposite and coaxial with said reciprocating member and 00- operating therewith; said cylinder on the one hand, and said guide and associated plunger, cross slot member and handle member on the other hand, being interchangeable end-for-end on said body.

4. A pump mechanism comprising a body, a shouldered guide threaded into said body at one end, a reciprocating plunger means in said guide, a cross slot member having a portion rotary on the guide and adapted to be held in any of various angular positions by threading the guide into final position on the body portion, said cross slot member having spaced extension members, each having a lateral guide slot, a handle member having a portion located for guided angling between said spaced members and having gudgeon means in said slots and being pin-jointed to said reciprocating member, a removable cylinder threaded to the other end of said body opposite and coaxial with said reciprocating member and cooperating therewith; said cylinder on the one hand, and said guide and associated plunger, cross slot member and handle member on the other hand, being interchangeable end-for-end on said body portion, and means on both ends of the body and cooperating with suitable means on the cross slot member for predetermining a plurality of fixed angular positions of the latter when attached at either end of the body.

LUTWIN C. ROT'I'ER. 

